CVE-2026-21631

MEDIUM

Joomla! Core - [20260303] - XSS vector in com_associations comparison view

Title source: cna

Lack of output escaping leads to a XSS vector in the multilingual associations component.

Core 2

Core References

Vendor Advisory vendor-advisory

Third Party Advisory third-party-advisory

CVSS v3 5.4

EPSS 0.0022

EPSS Percentile 11.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-79

Status published

Products (3)

joomla/joomla\! 3.0.0 - 5.4.4

Joomla! Project/Joomla! CMS 4.0.0-5.4.3

Joomla! Project/Joomla! CMS 6.0.0-6.0.3

Published Apr 01, 2026

Tracked Since Apr 01, 2026